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Versions: 17
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Contents
# frozen_string_literal: true
class ThinkingSphinx::Wildcard
DEFAULT_TOKEN = /\p{Word}+/
def self.call(query, pattern = DEFAULT_TOKEN)
new(query, pattern).call
end
def initialize(query, pattern = DEFAULT_TOKEN)
@query = query || ''
@pattern = pattern.is_a?(Regexp) ? pattern : DEFAULT_TOKEN
end
def call
query.gsub(extended_pattern) do
pre, proper, post = $`, $&, $'
# E.g. "@foo", "/2", "~3", but not as part of a token pattern
is_operator = pre.match(%r{@$}) ||
pre.match(%r{([^\\]+|\A)[~/]\Z}) ||
pre.match(%r{(\W|^)@\([^\)]*$})
# E.g. "foo bar", with quotes
is_quote = proper[/^".*"$/]
has_star = post[/\*$/] || pre[/^\*/]
if is_operator || is_quote || has_star
proper
else
"*#{proper}*"
end
end
end
private
attr_reader :query, :pattern
def extended_pattern
Regexp.new(
"(\"#{pattern}(.*?#{pattern})?\"|(?![!-])#{pattern})".encode('UTF-8')
)
end
end
Version data entries
17 entries across 17 versions & 1 rubygems